problem percentile runways

When using percentile runways with p = 1.0, no pcn raw values or frequency of atLeastHighStrengh are returned, whereas there is no problem with values of p < 1.0 This was found with the following query on deployment switch-to-strawberry:

query MyQuery {
  aircraftFromTailAndDate(date: "2019-12-03", tailNumber: "4XATJ") {
    msn
    aircraftId
    flightsBetween(dateStart: "2016-01-01", dateEnd: "2024-01-01", maxResults: 10) {
      arrival {
        airports {
          percentileRunway(p: 1) {
            pcn {
              atLeastHighStrength {
                frequency
              }
              raw {
                values
              }
            }
          }
        }
      }
    }
  }
}